164 IMPORTANT VARIETIES OF FISSION-FUNGI. 



(d) Gelatin liquefied ; colonies in plates with teeth or branches. 



(a) Gelatin stab without branches. The funnel of liquefaction in 

 the gelatin plate cultures is surrounded after a few days with a 

 yellowish-white circle of ragged points and teeth. (Compare 

 also Micr. corallioides Zimmermann. ) Micr. coronatus Flugge, 

 page 175. 



(/?) In gelatin stab are branches. The colonies in the gelatin 

 plate present a circle of pretty rays. Micr. radiatus Flugge, 

 page 176. 



B. Upon gelatin and agar, sulphur-yellow to lemon-yellow pigment is 

 produced. x 



1. Colonies in gelatin coarsely granular ; liquefaction rapid. Micr. 

 luteus Cohn, emend. L. and N., page 176. 



2. Colonies in gelatin finely granular ; liquefaction rapid. Micr. 

 flavus Flugge, L. and N., page 178. 



3. Colonies in gelatin finely granular ; no liquefaction. Micr. 

 sulfureus Zimmermann, page 178. 



C. Upon gelatin and agar, formation of brownish-yelloiv pigment. 

 Micr. badius, L. and N., page 178. 



D. Upon gelatin and agar, orange-yelloic to grayish-orange. 



(a) Agar streak uniformly orange-yellow. 



(a) Gelatin liquefied, pathogenic. Micr. pyogenes a aureus 



(Rosenbach) L. and N., page 181. 

 ((3) Gelatin not liquefied ; found in air. Micr. aurantiacus Cohn, 



page 189. 



(b) Agar streak, mottled gray and orange. Micr. bicolor Zimmer- 

 mann, page 189. 



E. Upon gelatin and agar, rose to crimson. 



(a) Rose to cherry-red ; upon potato, slight growth. Micr. roseus 

 (Bumm), L. and N., page 190. 



(b) Rose to cherry-red ; upon potato, broad, dry growth. Micr. 

 cerasinus (List) L. and N., page 193. 



(c) Scarlet red. Micr. erythromyxa Zopf, page 193. 



F. Upon gelatin and agar, cobalt blue. Micr. cyaneus (Schroter) 

 Cohn, page 193. 



Micrococcus gonorrhoeae (Neisser) (Flugge). 

 (Plate 10.) 



Synonyms. — Gonococcus (Neisser), Diplococcus gonor- 

 rhoeae Bumm, Micrococcus Gonorrhoeae Schroter. 



3Iost Important Literature. — A. Neisser, "C. f. med. Wiss.," 1879, 

 497; Bumm, " Der Mikroorganismus der gonorrh. Schleimhauter- 

 krankung," Wiesbaden, monograph, 1885; Wertheim, "Archiv fur 

 Gynakologie," xlii, 1892, 1 ; Wassermann, xxvii, 298. Latest exhaus- 



1 Compare also the pathogenic Micr. ascoformans Johne, the Micr. 

 pyogenes (3 citreus (Passet), and the Micr, ochroleucus Pro we, which 

 is said to form spores. 



